Well clean-out bailer



Aug. 15, 1939 H. NOTLEY 2,169,922

I WELL CLEAN-OUT BAILER Filed Jan. 25; 1939 INVENTOR I .Ioae fi17.11011.

ATTORNEYS Paented Aug. 15, 1939 arse sr- TEs wan. crass-our sauna JosephH. Notley, OkIahoma City, om, assignor of one-half to Brauer Machine &Supply Company, Oklahoma City, Okla, a corporation of OklahomaApplication sanitary 23, 1939, Serial No. 252,448

6 Elaims.

This invention relates to a tool or bailer adapted for use in oil, wateror gas wells for cleaning out debris such as rock bits, cones, bitheads, reamers, or the like.

5 An important object of this invention is to provide a bailer forcleaning out oil and gas wells involving the use of fluid circulatedthrough the bailer to cause a lifting of any debris in the well holeinto the boiler. m Another important object of this invention is toprovide a bailer for cleaning out oil and gas wells by fluid forcing anydebris into the well hole into the bailer, and causing the debris to betrapped in the boiler upon a stoppage of fluid circulation.

Other objects and advantages of my invention will be evident from thefollowing detailed description read in conjunction with the accompanyingdrawing which illustrates one form of my new invention.

In the drawing:

Fig. 1 is a vertical sectional view of the invention shown disposed in awell hole.

Fig. 2 is a view taken on line 2-4 of Fig. 1.

Fig. 3 is a fragmentary elevational view of the invention shown in awell hole.

Referring to the drawing in detail and more particularly to Fig. 1, theimproved tool or bailer comprises an outer cylinder Ill having an upperthreaded portion I2 of reduced diameter adapted to be connected to astring of tubing (not shown) in a. well hole. The cylinder It isdisposed in spaced relation to the casing l4 in the well hole. The lowerend of the cylinder III is provided with a plurality ofcircumferentially disposed serrations or teeth I6 adapted to work intoand encompass any debris such as broken pieces of cones, bit heads,reamers or the like (not shown) that may be present in the bottom of thewell hole. The teeth It dig into the structure to efiect a seal betweenthe cylinder Ill and the bottom of the well hole as well as assurerigidity of the bailer. The outer periphery of the cylinder III isprovided with a plurality of equally spaced lugs l8 (preferably three innumber), to provide proper clearance be-' tween the cylinder l and thecasing l4.

A cylindrical container 20 is disposed within the outer cylinder It inspaced relation thereto, and comprises an upper cylindrical member and alower cylindrical member 24 in threaded engagement with each other at26. The upper end of the member 22 is closed oil by a loop portion 28.The member 22 is provided with a plurality of apertured projections orconduits 30 (preferably four in number, Fig. 2) adapted to be fixed incomplementary apertures provided in the outer cylin- III der it, thussecuring member 22 in the cylinder to. A plurality of screens or bars 32are disposed within the apertured projections 30 for a purpose as willbe hereinafter set forth.

The lower cylinder 26 is removable from the upper cylinder and isprovided with a disc shaped flapper valve 34 diposed within the interiorthereof. It is to be noted that the inner periphery of the cylinder 24is provided with a recess 36 to allow substantially full opening of theflapper valve 34. The valve it is hinged or pivoted to the cylinder 24by the pin 38. A projection is disposed substantially diametricallyopposite the pin 38, allowing the valve 34 to seat thereon and close,thereby preventing swinging movement in a downward direction. Aplurality of lugs 42 are provided on the outer periphery of cylinder 24in order to provide the proper clearance or spacing with respect tocylinder Ill. Although not essential, the interior of the cylinder 24 isshown provided with a plurality of baskets 44 disposed in staggeredrelation which assist in trapping debris as will be hereinafter setforth.

Operation In operation the bailer, in complete assembly is lowered intothe well by a string of tubing (not shown) and is allowed to rest on thebottom of the hole, with the teeth It encompasing' any debris that ispresent in the well hole. Fluid under pressure, such as gas or liquid,is introduced into the tubing from any suitable source at the top of thewell (not shown) and flows from the tubing into the space 46 between theinner container 20 and the outer cylinder l0.Itistobenotedthatthecontainer 20 is arranged in the cylinder I0 so thatthe lowermost portion 45 of cylinder 24' is disposed a slight distanceupwardly from the lowermost point of the outer cylinder Ill. The fluidflows from space 46 and stirs up any debris encompassed by the cylinderl0 and carries it into the container 20. It will be understood that thepressure of the fluid causes opening of the flapper valve 34. The

valve 34 is provided with a plurality of perforations or apertures 41,preferably disposed adjacent the hinge pin 38, so that the fluid canflow through the apertures and remove any debris which may fall on thevalve 34 and prevent its opening. -As long as the fluid pressure ispresent, the debris is held in the interior of the container 20, withthe fluid flowing through the apertured projections 30 into a space 48between the outer cylinder l0 and the casing l4, and on to the top ofthe well. It will be apparent that any debris present in the container20 is prevented from passing out into the space It by the screens 32.

In order to entrap the debris within the ballet, the fluid at the top ofthe well is shut ofl thereby releasing the pressure against the flappervalve 34 causing it to close, withthe debris in the bailer. It will beobvious that the baskets ll assist the valve in trapping the debris. Thebailer and its entrapped debris can then be removed from the well, andthe lower cylinder 24 unscrewed from the cylinder 22 to dump the debriscollected in the container 20. If necessary the boiler can be againlowered into the well and the operation repeated.

Changes may be made in the combination and arrangement of parts asheretofore set forth in the specification and shown in the drawing, itbeing understood that any modification in the precise embodiment 'of theinvention may be made within the scope of the following claims withoutdeparting from the spirit 0! the invention.

What I claim is:

l. A bailer disposed in spaced relation to the casing in a well holecomprising a cylinder adapted to receive afluid under pressure, acontainer arranged within the cylinder in spaced relation thereto andhaving its lowermost portion positioned away from the lowermost portionof the cylinder to allow fluid from the cylinder to stir up any debrisencompassed by the cylinder and deposit it in the container, meansproviding an outlet for the fluid from the container into the casing,means in said outlet means preventing passage of any debris deposited inthe container, and means provided in the container for trapping thedebris in the container upon release of the fluid pressure.

2. A bailer disposed in spaced relation to the casing in a well holecomprising a cylinder adapted to receive a fluid under pressure, acontainer arranged within the cylinder and in spaced relation thereto,said container having its lowermost portion positioned away from thelowermost portion of the cylinder to allow fluid from the cylinder tostir up any debris encompassed by the cylinder and deposit it in thecontainer, a plurality of conduits providing an outlet for the fluidfrom the container into the casing, a screen in each of said conduitsfor preventing passage of any debris deposited in the container, and aflapper valve provided in the container for trapping the debris in thecontainer upon release of the fluid pressure.

3. A bailer disposed in spaced relation to the casing in a well holecomprising a cylinder adapted to receive a fluid under pressure, saidcylinder having a plurality of teeth arranged at its lower end forencompassing any debris in the well hole, a container arranged in thecylinder in spaced relation thereto, means provided in the containerallowing passage of fluid and debris into the container, means providingan outlet for the fluid from the container into the casing, means insaid outletmeans preventing passage of debris through the outlet means.

4. A bailer disposed in spaced relation to the casing in a well holecomprising a cylinder adapted to receive a fluid under pressure, saidcylinder having a plurality of teeth arranged at its lower end forencompassing any debris in the well hole, a container arranged in thecylinder in spaced relation thereto, a valve provided in the containerallowing passage of fluid and debris into the container, a plurality ofconduits providing an outlet for the fluid from the container into thecasing and a screen in said conduits preventing passage of debristhrough the conduits.

5. A bailer disposedin spaced relation to the casing in a well holecomprising a cylinder adapted to receive a fluidunder pressure, acontainer arranged within the cylinder in spaced relation thereto forreceiving any debris stirred up by the fluid flowing from the cylinderinto the container, means providing an outlet for the fluid from thecontainer into the casing, means preventing passage of the debristhrough the outlet means, and means for trapping the debris in thecontainer upon a release of fluid pressure.

6. A bailer disposed in spaced relation to the casing in a well holecomprising a. cylinder adapted to receive a fluid under pressure, acontainer arranged within the cylinder in spaced relation thereto forreceiving any debris stirred up by the fluid flowing from the cylinderinto the container, a conduit providing an outlet for the fluid from thecontainer into the casing, a screen preventing passage of the debristhrough the conduit, and a valve for trapping the debris in thecontainer upon the release of fluid pres? sure.

JOSEPH H. NO'I'LEY.

